Blender has built-in exporters for Collada (DAE) and .3DS files. You hardly need a tutorial for exporting those for Papervision. Just go to the scripts window in Blender and use the existing exporters for those formats. Pretty self-explanatory.
I just started working with Papervision a couple days ago - which is difficult given that I 1) don't own Flash (I'm using FlashDevelop instead) and 2) have no idea what the hell I'm doing at all. I have so far managed to get a simple model loaded and rotating in my browser. Here's a link:…